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Phytase-Supplemented Salmon Diets Australian researchers used a 2x2 factorial arrangement
of treatments to compare the effects of phytase and inorganic phosphorus
supplementation of a diet formulated to be marginal in both available
and total phosphorus. Results indicated that after twelve weeks the
supplements had no significant effect on fish survival, feed intake
or fish weigh gain. Phosphorus digestibility and retention were significantly
(P<0.05) higher and phosphorus load was significantly (P<0.05)
lower in fish fed the phytase-supplemented diet compared to the fish
fed the inorganic phosphorus treatments. The researchers concluded that
supplementing with phytase increases phosphorus availability; thereby
reducing the need for inorganic phosphorus and the phosphorus was from
plant meal-based diets for Atlantic salmon. |
